Use LinkedHashSet if you wish to keep non-duplicated objects organized according to the order in which they are inserted.
What does LinkedHashSet mean?The entries in the set are kept in order of insertion in a linked list by LinkedHashSet. This enables iterating over the set in insertion-order. That is, the elements will be returned in the order they were inserted when iterating through a LinkedHashSet using an iterator.
What distinguishes LinkedHashSet from HashSet?LinkedHashSet is a collection of HashSet that is ordered and sorted, whereas HashSet is an unordered and unsorted collection of the data set. There is no way to keep the insertion order consistent with HashSet. LinkedHashSet, in contrast, preserves the insertion order of the entries.
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Create a list of 30 words, phrases and company names commonly found in phishing messages. Assign a point value to each based on your estimate of its likeliness to be in a phishing message (e.g., one point if it’s somewhat likely, two points if moderately likely, or three points if highly likely). Write a program that scans a file of text for these terms and phrases. For each occurrence of a keyword or phrase within the text file, add the assigned point value to the total points for that word or phrase. For each keyword or phrase found, output one line with the word or phrase, the number of occurrences and the point total. Then show the point total for the entire message. Does your program assign a high point total to some actual phishing e-mails you’ve received? Does it assign a high point total to some legitimate e-mails you’ve received?
Answer:
Words found in phishing messages are:
Free gift
Promotion
Urgent
Congratulations
Check
Money order
Social security number
Passwords
Investment portfolio
Giveaway
Get out of debt
Ect. this should be a good starting point to figuring out a full list
Joseph learned in his physics class that centimeter is a smaller unit of length and a hundred centimeters group to form a larger unit of length called a meter. Joseph recollected that in computer science, a bit is the smallest unit of data storage and a group of eight bits forms a larger unit. Which term refers to a group of eight binary digits? A. bit B. byte O C. kilobyte D. megabyte
Answer:
byte
Explanation:
A byte is made up of eight binary digits
Earl develops a virus tester which is very good. It detects and repairs all known viruses. He makes the software and its source code available on the web for free and he also publishes an article on it. Jake reads the article and downloads a copy. He figures out how it works, downloads the source code and makes several changes to enhance it. After this, Jake sends Earl a copy of the modified software together with an explanation. Jake then puts a copy on the web, explains what he has done and gives appropriate credit to Earl.
Discuss whether or not you think Earl or Jake has done anything wrong?
Answer:
They have done nothing wrong because Jake clearly gives credit to Earl for the work that he did
Explanation:
Earl and Jake have nothing done anything wrong because Jake give the proper credit to Earl.
What is a virus tester?A virus tester is a software that scan virus on computer, if any site try to attack any computer system, the software detect it and stop it and save the computer form virus attack.
Thus, Earl and Jake have nothing done anything wrong because Jake give the proper credit to Earl.
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Specialized high-capacity second storage devices designed to meet organizational demands
1 CD DEVICES
2. FLASH DRIVES
3. PLATTERS
4. MASS STORAGE DEVICES
Answer:
CD devices
Explanation:
Answer:
Mass storage devices
Explanation:
I don't think I can really explain it, that is just the definition of it.
Elimination:
CD and flash drives aren't high-capacity
Platters aren't really storage devices, they are a part of hard drives
Suppose you are choosing between the following three algorithms:
• Algorithm A solves problems by dividing them into five subproblems of half the size, recursively solving each subproblem, and then combining the solutions in linear time.
• Algorithm B solves problems of size n by recursively solving two subproblems of size n − 1 and then combining the solutions in constant time.
• Algorithm C solves problems of size n by dividing them into nine sub-problems of size n=3, recursively solving each sub-problem, and then combining the solutions in O(n2) time.
What are the running times of each of these algorithms (in big-O notation), and which would you choose?
Answer:
Algorithm C is chosen
Explanation:
For Algorithm A
T(n) = 5 * T ( n/2 ) + 0(n)
where : a = 5 , b = 2 , ∝ = 1
attached below is the remaining part of the solution
PLEASE HELP!!!
Question 6:
A retailer of computers maintains a record containing the following information for every individual
computer sold
• Manufacturer name
• Model number
• Physical memory size
• Processor name
• Date of sale
• Price sold for
Using only the database, which of the following CANNOT be determined?
The average price of a computer was sold by the retailer
In which months less than 100 computers were sold
o Which models of computer stocked by the retailer have not had a single sale
The most popular model of computer sold by the retailer
Which of the follwing are examples of meta-reasoning?
A. She has been gone long so she must have gone far.
B. Since I usually make the wrong decision and the last two decisions I made were correct, I will reverse my next decision.
C. I am getting tired so I am probably not thinking clearly.
D. I am getting tired so I will probably take a nap.
Answer: B. Since I usually make the wrong decision and the last two decisions I made were correct, I will reverse my next decision.
C. I am getting tired so I am probably not thinking clearly
Explanation:
Meta-Reasoning simply refers to the processes which monitor how our reasoning progresses and our problem-solving activities and the time and the effort dedicated to such activities are regulated.
From the options given, the examples of meta reasoning are:
B. Since I usually make the wrong decision and the last two decisions I made were correct, I will reverse my next decision.
C. I am getting tired so I am probably not thinking clearly
Which of the following describe ALAC audio files? Choose all that apply.
uses a codec that is open source
uses a codec that lives in iPods and other Apple hardware
was developed by Apple
is exclusively supported by Apple iTunes
may have .mp3 and .mp4 file extensions
Answer:
B,C,D
Explanation:
Answer:
B C D
Explanation:
For this question we won't be directly working within LinkedList however. Instead, we'll be working with a Runner class:
public class Runner {
private LinkedList firstItemList;
private LinkedList listRemainder;
public Runner() {
firstItemList = null;
listRemainder = null;
}
}
For this question, write a method for the Runner class that will take in a LinkedList, split into two linked lists, and assign their values to firstItemList and listRemainder. Assign firstItemList to be a new LinkedList that just contains the first value. Assign listRemainder to be a new linkedList that contains everything EXCEPT the remainder.
More clearly, if you are given a linked list that looks like: 1 --> 2 --> 3 --> 4 Then assign firstItemList to 1 --> null and listRemainder to `2 --> 3 --> 4``
Please note this will be the only question that deals with a Runner Class instead of the LinkedList class directly.
public void split(LinkedList wholeList) {
}// end split
Solve in JAVA please using LinkedList methods and Node methods only if necessary
Answer:
Explanation:
The following method will take in a LinkedList as an argument and split it, adding only the first element to the firstItemList and the rest of the elements to listRemainder. The firstItemList and ListRemainder may have to be changed to static in order for the method to be able to access them, or add a setter/getter method for them.
public static void split(LinkedList list) {
firstItemList = new LinkedList();
listRemainder = new LinkedList();
firstItemList.add(list.peek());
list.pop();
listRemainder = list;
}
The complete java code for the Runner class can be defined as follows:
Java Code:public class Runner<T>//defining a class Runner
{
private LinkedList<T> firstItemList;//defining LinkedList type array variable that is firstItemList
private LinkedList<T> ListRemainder;//defining LinkedList type array variable that is ListRemainder
public Runner()//defining default constructor
{
firstItemList=null;//holding null value in list type variable
ListRemainder=null;//holding null value in list type variable
}
public void split(LinkedList<T> WholeLinkedList)//defining a method split that takes a list in parameter
{
if(WholeLinkedList==null)//defining if block that checks parameter variable value equal to null
return;//using return keyword
firstItemList=WholeLinkedList;//holding parameter variable value in firstItemList
ListRemainder=WholeLinkedList.next;//holding parameter variable next value in ListRemainder
firstItemList.next=null;//holding null value in firstItemList.next element
}
}
Code Explanation:
Defining a class Runner.Inside the class two LinkedList type array variable that is "firstItemList, ListRemainder" is declared.In the next step, a default constructor is defined, in which the above variable is used that holds null value in list type variable.In the next line, a method "split" is declared in which it accepts "WholeLinkedList" as a parameter.Inside this, if a conditional block is defined that checks parameter variable value equal to null if it's true it returns nothing.outside the conditional block, it checks the parameter value and holds value in it.Find out more about the linked list here:
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Which of the following transfer rates is the FASTEST?
1,282 Kbps
O 1,480 Mbps
1.24 Gbps
181 Mbps
Answer:
The correct answer is 1,480 Mbps.
Explanation:
For this you have to know how to convert bytes to different units.
1,000 Bytes (b) = 1 Kilobyte (Kb)
1,000 Kilobyte (Kb) = 1 Megabyte (Mb)
1,000 Megabytes (Mb) = 1 Gigabyte (Gb)
and Finally, 1,000 Gigabytes (Gb) = 1 Terrabyte (Tb)
Answer:
1,480 Mbps
Explanation:
1,480 Mbps is equal to 1.48 Gbps, and so it is the fastest transfer rate listed because it is greater than 1.24 Gbps. In summary, 1,480 Mbps > 1.24 Gbps > 181 Mbps > 1,282 Kbps.
the
Wnte
that
Program
will accept three
Values of
sides of a triangle
from
User and determine whether Values
carceles, equal atera or sealen
- Outrast of your
a
are for
an
Answer:
try asking the question by sending a picture rather than typing
Write the Java classes for the following classes. Make sure each includes 1. instance variables 2. constructor 3. copy constructor Submit a PDF with the code The classes are as follows: Character has-a name : String has-a health : integer has-a (Many) weapons : ArrayList has-a parent : Character has-a level : Level (this should not be a deep copy) Level has-a name : String has-a levelNumber : int has-a previousLevel : Level has-a nextLevel : Level Weapon has-a name : String has-a strength : double Monster is-a Character has-a angryness : double has-a weakness : Weakness Weakness has-a name : String has-a description: String has-a amount : int
Answer:
Explanation:
The following code is written in Java. It is attached as a PDF as requested and contains all of the classes, with the instance variables as described. Each variable has a setter/getter method and each class has a constructor. The image attached is a glimpse of the code.
what materials can I find at home and make a cell phone tower
Answer:
you cant
Explanation:
You simply cant make a tower from materials found in a household
A non-profit organization decides to use an accounting software solution designed for non-profits. The solution is hosted on a commercial provider's site but the accounting information suchas the general ledger is stored at the non-profit organization's network. Access to the software application is done through an interface that uses a coneventional web browser. The solution is being used by many other non-profit. Which security structure is likely to be in place:
Answer:
A firewall protecting the software at the provider
Explanation:
The security structure that is likely to be in place is :A firewall protecting the software at the provider
Since the access to the software application is via a conventional web browser, firewalls will be used in order to protect against unauthorized Internet users gaining access into the private networks connected to the Internet,
SOMEONE PLS HELP?!?!!
Answer:
B. To continuously check the state of a condition.
Explanation:
The purpose of an infinite loop with an "if" statement is to constantly check if that condition is true or false. Once it meets the conditions of the "if" statement, the "if" statement will execute whatever code is inside of it.
Example:
//This pseudocode will print "i is even!" every time i is an even number
int i = 0;
while (1 != 0) //always evaluates to true, meaning it loops forever
i = i + 1; // i gets incrementally bigger with each loop
if ( i % 2 == 0) //if i is even....
say ("i is even!"); //print this statement
Write the following generic method that sorts an ArrayList of Comparable items. The sort method must use the compareTo method.
public static > void sort(ArrayList list)
Write a test program that:
1. prompts the user to enter 10 integers, invokes this method to sort the numbers, and displays the numbers in ascending order
2. prompts the user to enter 5 strings, invokes this method to sort the strings, and displays the strings in ascending (alphabetical) order
Answer:
Explanation:
The following code is written in Java, it prompts the user to enter 10 integers and saves them to an ArrayList. Then it prompts for 5 strings and saves them to another ArrayList. Then, it calls the sort method and adds the lists as parameters. Finally, it prints out both lists completely sorted in ascending order.
import java.util.ArrayList;
import java.util.Scanner;
class Division{
public static double division(double a, double b) throws Exception {
if(b == 0)
//throw new Exception("Invalid number.");
return (a / b);
return a / b;
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
ArrayList<Integer> mylist2 = new ArrayList<>();
for (int x = 0; x < 10; x++) {
System.out.println("Please Enter a Number: ");
int number = in.nextInt();
mylist2.add(number);
}
ArrayList<String> mylist = new ArrayList<>();
for (int x = 0; x < 5; x++) {
System.out.println("Please Enter a Word: ");
String word = in.nextLine();
mylist.add(word);
}
sort(mylist);
sort(mylist2);
for (String x: mylist) {
System.out.print(x + ", ");
}
System.out.println("");
for (int x: mylist2) {
System.out.print(x + ", ");
}
}
public static <E extends Comparable<E>> ArrayList<E> sort(ArrayList<E> list) {
E temp;
if (list.size()>1) // check if the number of orders is larger than 1
{
for (int x=0; x<list.size(); x++) // bubble sort outer loop
{
for (int i=0; i < list.size() - x - 1; i++) {
if (list.get(i).compareTo(list.get(i+1)) > 0)
{
temp = list.get(i);
list.set(i,list.get(i+1) );
list.set(i+1, temp);
}
}
}
}
return list;
}}
What is output?
public class Division{
public static double division(double a, double b) throws Exception {
if(b == 0)
throw new Exception("Invalid number.");
return a / b;
}
public static void main(String[] args) {
try {
System.out.println("Result: " + division(5, 0));
}
catch (ArithmeticException e) {
System.out.println("Arithmetic Exception Error");
}
catch (Exception except) {
System.out.println("Division by Zero");
}
catch(Throwable thrwObj) {
System.out.println("Error");
}
}
}
A. Error.
B. Arithmetic Exception Error.
C. Arithmetic Exception Error Division by Zero Error.
D. Division by zero.
Answer:
D. Division by zero.
Explanation:
This Java code that is being provided in the question will output the following error.
Division by zero
This is because the main method is calling the division method and passing 0 for the variable b. The method detects this with the if statement and creates a new Exception. This exception is grabbed by the catch(Exception exception) line and prints out the error Division by zero.
Write a recursive method called permut that accepts two integers n and r as parameters and returns the number of unique permutations of r items from a group of n items. For given values of n and r, this value P(n, r) can be computed as follows:
n!/(n - r)!
For example , permut (7, 4) should return 840.
Answer:
Following are the code to the given question:
public class Main//defining a class Main
{
static int permut(int n, int r)//defining a method permut that holds two variable
{
return fact(n)/fact(n-r);//use return keyword to return calcuate value
}
static int fact(int n)//defining a fact method as recursive to calculate factorials
{
return n==0?1:n*fact(n-1);//calling the method recursively
}
public static void main(String[] abs)//main function
{
//int n=7,r=4;//defining integer variable
System.out.println(permut(7,4));//use print method to call permut method and print its values
}
}
Output:
840
Explanation:
Following is the explanation for the above code.
Defining a class Main.Inside the class two methods, "permut and fact" were defined, in which the "permut" accepts two values for calculating its permutated value, and the fact is used for calculates factorial values recursively. At the last, the main method is declared, which uses the print method to call "permut" and prints its return values.Complete the problem about Olivia, the social worker, in this problem set. Then determine the telecommunications tool that would best meet Olivia's needs.
PDA
VoIP
facsimile
Internet
Answer:
PDA is the correct answer to the following answer.
Explanation:
PDA refers for Programmable Digital Assistant, which is a portable organizer that stores contact data, manages calendars, communicates via e-mail, and manages documents and spreadsheets, typically in conjunction with the user's personal computer. Olivia needs a PDA in order to communicate more effectively.
This lab was designed to teach you more about using Scanner to chop up Strings. Lab Description : Take a group of numbers all on the same line and average the numbers. First, total up all of the numbers. Then, take the total and divide that by the number of numbers. Format the average to three decimal places Sample Data : 9 10 5 20 11 22 33 44 55 66 77 4B 52 29 10D 50 29 D 100 90 95 98 100 97 Files Needed :: Average.java AverageRunner.java Sample Output: 9 10 5 20 average = 11.000 11 22 33 44 55 66 77 average = 44.000 48 52 29 100 50 29 average - 51.333 0 average - 0.000 100 90 95 98 100 97 average - 96.667
Answer:
The program is as follows:
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String score;
System.out.print("Scores: ");
score = input.nextLine();
String[] scores_string = score.split(" ");
double total = 0;
for(int i = 0; i<scores_string.length;i++){
total+= Double.parseDouble(scores_string[i]); }
double average = total/scores_string.length;
System.out.format("Average: %.3f", average); }
}
Explanation:
This declares score as string
String score;
This prompts the user for scores
System.out.print("Scores: ");
This gets the input from the user
score = input.nextLine();
This splits the scores into an array
String[] scores_string = score.split(" ");
This initializes total to 0
double total = 0;
This iterates through the scores
for(int i = 0; i<scores_string.length;i++){
This calculates the sum by first converting each entry to double
total+= Double.parseDouble(scores_string[i]); }
The average is calculated here
double average = total/scores_string.length;
This prints the average
System.out.format("Average: %.3f", average); }
}
An example of a host-based intrusion detection tool is the tripwire program. This is a file integrity checking tool that scans files and directories on the system on a regular basis and notifies the administrator of any changes. It uses a protected database of cryptographic checksums for each file checked and compares this value with that recomputed on each file as it is scanned. It must be configured with a list of files and directories to check and what changes, if any, are permissible to each. It can allow, for example, log files to have new entries appended, but not for existing entries to be changed. What are the advantages and disadvantages of using such a tool? Consider the problem of determining which files should only change rarely, which files may change more often and how, and which change frequently and hence cannot be checked. Hence consider the amount of work in both the configuration of the program and on the system administrator monitoring the responses generated.
Answer:
The main problem with such a tool would be resource usage
Explanation:
The main problem with such a tool would be resource usage. Such a tool would need a large amount of CPU power in order to check all of the files on the system thoroughly and at a fast enough speed to finish the process before the next cycle starts. Such a program would also have to allocate a large amount of hard drive space since it would need to temporarily save the original versions of these files in order to compare the current file to the original version and determine whether it changed or not. Depending the amount of files in the system the work on configuring the program may be very extensive since each individual file needs to be analyzed to determine whether or not they need to be verified by the program or not. Monitoring responses may not be so time consuming since the program should only warn about changes that have occurred which may be only 10% of the files on a daily basis or less.
How does it relate
to public domain
and fair use?
Consider the following two relations for Millennium College
STUDENT(StudentID, StudentName,CampusAddress, GPA)
REGISTRATION(StudentID, CourseID, Grade)
Following is a typical query against these Relation:
SELECT Student_T.StudentID,StudentName,
CourseID, Grade
FROM Sudent_T, Registration_T
WHERE Student_T.StudentID =
Registration_T.StudentID
AND GPA> 3.0
ORDER BY StudentName;
Required:
On what attributes should indexes be defined to speed up this Query? PLease give reasons for each selected
Which of the following techniques is a direct benefit of using Design Patterns? Please choose all that apply Design patterns help you write code faster by providing a clear idea of how to implement the design. Design patterns encourage more readible and maintainable code by following well-understood solutions. Design patterns provide a common language / vocabulary for programmers. Solutions using design patterns are easier to test
Answer:
Design patterns help you write code faster by providing a clear idea of how to implement the design
Explanation:
Design patterns help you write code faster by providing a clear idea of how to implement the design. These are basically patterns that have already be implemented by millions of dev teams all over the world and have been tested as efficient solutions to problems that tend to appear often. Using these allows you to simply focus on writing the code instead of having to spend time thinking about the problem and develop a solution. Instead, you simply follow the already developed design pattern and write the code to solve that problem that the design solves.
Which of the following describes a codec? Choose all that apply.
a computer program that saves a digital audio file as a specific audio file format
short for coder-decoder
converts audio files, but does not compress them
Answer:
A, B
Explanation:
Create a recursive procedure named (accumulator oddsum next). The procedure will return the sum of the odd numbers entered from the keyboard. The procedure will read a sequence of numbers from the keyboard, where parameter oddsum will keep track of the sum from the odd numbers entered so far and parameter next will (read) the next number from the keyboard.
Answer:
Explanation:
The following procedure is written in Python. It takes the next argument, checks if it is an odd number and if so it adds it to oddsum. Then it asks the user for a new number from the keyboard and calls the accumulator procedure/function again using that number. If any even number is passed the function terminates and returns the value of oddsum.
def accumulator(next, oddsum = 0):
if (next % 2) != 0:
oddsum += next
newNext = int(input("Enter new number: "))
return accumulator(newNext, oddsum)
else:
return oddsum
4.5.2 For loop: printing a dictionary python
Answer:
for x, y in thisdict.items():
print(x, y)
Explanation:
Discuss the relationship of culture and trends?
To use cache memory main memory are divided into cache lines typically 32 or 64 bytes long.an entire cache line is cached at once what is the advantage of caching an entire line instead of single byte or word at a time?
Answer:
The advantage of caching an entire line in the main memory instead of a single byte or word at a time is to avoid cache pollution from used data
Explanation:
The major advantage of caching an entire line instead of single byte is to reduce the excess cache from used data and also to take advantage of the principle of spatial locality.
What is the difference between an information system and a computer application?
Answer:
An information system is a set of interrelated computer components that collects, processes, stores and provides output of the information for business purposes
A computer application is a computer software program that executes on a computer device to carry out a specific function or set of related functions.